Bridge″board′ (�), n. 1. (Arch.) A notched board to which the treads and risers of the steps of wooden stairs are fastened.
2. A board or plank used as a bridge.
Webster's Dictionary 1913
Bridge″board′ (�), n. 1. (Arch.) A notched board to which the treads and risers of the steps of wooden stairs are fastened.
2. A board or plank used as a bridge.